栎粉属-柳粉属-粉属组合，属晚始新世-早渐新世。

Quercoidites - Saliaxipollenites- Fraxinoipollenits assemblage, which may belong to Late Eocene-Early Oligocene.

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晚春的高原依然有几分荒凉，满目的高原栎和高原柳冷冷地看着远山间的松林。

It was late spring, but Shangri-La was still desolate, full of oaks and willows. On the southern slope, we could see snow in the fir-tree forest.

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